Add debtcollector to lib/oslo and stackrc

Ensure that the debtcollector library is pulled in
like the other oslo libraries so that devstack can
use it where appropriate.

Also fixes 'test_libs_from_pypi.sh' to not have a huge
single line of libraries; and splits it into multiple
lines so the diffs and code can be easily looked at.

Change-Id: I35ab0ed0e20b6092a41ecb3b6f1aaf0a05f5180e
diff --git a/lib/oslo b/lib/oslo
index effde90..18cddc1 100644
--- a/lib/oslo
+++ b/lib/oslo
@@ -23,6 +23,7 @@
 # Defaults
 # --------
 GITDIR["cliff"]=$DEST/cliff
+GITDIR["debtcollector"]=$DEST/debtcollector
 GITDIR["oslo.concurrency"]=$DEST/oslo.concurrency
 GITDIR["oslo.config"]=$DEST/oslo.config
 GITDIR["oslo.context"]=$DEST/oslo.context
@@ -58,6 +59,7 @@
 # install_oslo() - Collect source and prepare
 function install_oslo {
     _do_install_oslo_lib "cliff"
+    _do_install_oslo_lib "debtcollector"
     _do_install_oslo_lib "oslo.concurrency"
     _do_install_oslo_lib "oslo.config"
     _do_install_oslo_lib "oslo.context"